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Binder compositions for making fiberglass products

a technology of compositions and fiberglass, applied in the field of binding compositions, can solve the problem that fiberglass mats do not meet the minimum tear strength specifications, and achieve the effect of improving strength properties and methods of making

Active Publication Date: 2012-03-15
GEORGIA PACIFIC CHEM LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0007]There is a need, therefore, for fiberglass mats having improved strength properties and methods for making same.

Problems solved by technology

Frequently, fiberglass mats do not meet minimum tear strength specifications that are required for the fiberglass mat to be used in roofing applications.

Method used

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  • Binder compositions for making fiberglass products

Examples

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examples

[0091]In order to provide a better understanding of the foregoing discussion, the following non-limiting examples are offered. Although the examples may be directed to specific embodiments, they are not to be viewed as limiting the invention in any specific respect. All parts, proportions, and percentages are by weight unless otherwise indicated.

example i

[0092]Examples 1 and 2 are a 3,000 molecular weight (Mw) SMA solution with TEA. Example 1 and 2 polymers were made by adding 200 g of 3,000 Mw SMA, 352 g of water, 14 g MEA, 80 g of TEA, and 33 g of aqueous ammonia (28%) to a standard sealed polymer reactor. The mixture was heated to about 98° C. for about 4 to about 6 hours at which point the SMA had dissolved and the solutions became clear. The final pH was between about 8 and 8.5. The Example 3 and 4 polymers were the same SMA-TEA solution as Examples 1 and 2; however, the SMA-TEA solution was modified with a dextrose solution by adding 172 g of a 50% dextrose solution to 200 g of the SMA-TEA solution. The comparative examples (C5 and C6) are a 10% latex modified urea formaldehyde polymer that yields a high tear strength glass mat. The urea formaldehyde polymer, prior to modifying with the 10% latex, is referred to herein as the “unmodified UF polymer.” The 10% latex modified urea-formaldehyde polymer was blended, at room tempera...

example ii

[0101]Two inventive examples (7 and 8) and one comparative example (C9) are provided and summarized below in Table 2. Examples 7 and 8 are two acrylic solutions combined with an unmodified UF polymer. Specifically, Example 7 was a polymer containing a combination of an unmodified UF polymer and the Example 1 polymer. For Example 7, the ratio of unmodified UF polymer to the Example 1 polymer was 40 wt % to 60 wt % (40:60). Example 8 is a polymer containing a combination of an unmodified UF polymer and the Example 3 polymer. For Example 8, the ratio of unmodified UF polymer to the Example 3 polymer was 40 wt % to 60 wt % (40:60). As discussed above, the unmodified UF polymer for both Example 7 and 8 is the same polymer as the Comparative Examples 5 and 6, but without the 10% latex. The unmodified UF polymer used to make Examples 7 and 8 was made by standard techniques for making urea-formaldehyde polymers, such as those discussed and described in U.S. Pat. No. 5,362,842. Comparative E...

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Abstract

Fiberglass mats, binder compositions, and methods for making the same are provided. The fiberglass mat can include a plurality of glass fibers and an at least partially cured binder composition. The binder composition, prior to at least partial curing, can include a first copolymer modified by reaction with one or more base compounds. The first copolymer can include one or more unsaturated carboxylic acids, one or more unsaturated carboxylic anhydrides, or a combination thereof, and one or more vinyl aromatic derived units. The first copolymer can have a weight average molecular weight (Mw) of about 500 to about 200,000. The first copolymer can be present in an amount ranging from about 60 wt % to about 95 wt %, based on a combined weight of the first copolymer and the one or more base compounds.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of U.S. patent application having Ser. No. 12 / 959,136, filed on Dec. 2, 2010, and published as U.S. Publication No. 2011 / 0165398, which claims priority to U.S. Provisional Patent Application having Ser. No. 61 / 265,956, filed Dec. 2, 2009. This application is also a continuation-in-part of U.S. patent application having Ser. No. 12 / 534,319 filed on Aug. 3, 2009, and published as U.S. Publication No. 2010 / 0029160, which is a continuation-in-part of U.S. patent application having Ser. No. 11 / 454,326, filed on Jun. 16, 2006, and issued as U.S. Pat. No. 7,803,879 and a continuation-in-part of U.S. patent application having Ser. No. 11 / 454,327, filed on Jun. 16, 2006, and issued as U.S. Pat. No. 7,795,354. All of which are incorporated by reference herein.BACKGROUND[0002]1. Field[0003]Embodiments described herein generally relate to binder compositions. More particularly, such embodiments relate to bin...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B3/00C08L5/00C08L35/06C08L61/24C08L61/28C08L33/02C08L61/12C08L61/30C08K7/14C08L61/10
CPCC08J5/043C08J5/10C08J5/24D04H3/004C08J2400/24C08L33/02C09J133/02C08J2325/08C08J5/244
Inventor SHOEMAKE, KELLY A.GAPUD, BENJAMIN D.SRINIVASAN, RAMJINARAYAN, ARUNIMAN, AHMED A.
Owner GEORGIA PACIFIC CHEM LLC
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